A function that walks a node array using the given visitor, returning an array whose contents satisfy the test.
If the input node array is undefined, the output is undefined.
If the visitor can return undefined, the node it visits in the array will be reused.
If the output node array is not undefined, then its contents will satisfy the test.
In order to obtain a return type that is more specific than NodeArray<Node>, a test
function must be provided, and that function must be a type predicate.
A function that walks a node array using the given visitor, returning an array whose contents satisfy the test.
NodeArray<Node>, a test function must be provided, and that function must be a type predicate.For the canonical implementation of this type,
See
.